We look at the division of 550390 by 19 
The aim is to understand the frequency of 19 in 550390.

Going ahead to step 1:
The number 19 fits into 5 0 times, leaving a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 19

Advancing to step 2:
55 divided by 19 is 2 with a remainder of 17.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 38 from 55 and we're left with 17.
Bring next digit (0) of the dividend behind the 17 and repeat the process: 170 / 19

Let's proceed to step 3:
The number 19 fits into 170 8 times, leaving a remainder of 18.
Write down 8 as next digit of the result. 
Result so far: 28.0
Subtract 152 from 170 to get 18.
Include the next digit (3) from the dividend after 18, then repeat: 183 / 19

Going ahead to step 4:
If we divide 183 by 19, we get 9 and a remainder of 12.
The number 9 becomes the next digit in our result. 
Result so far: 289.0
If we subtract 171 from 183, we get 12.
Bring next digit (9) of the dividend behind the 12 and repeat the process: 129 / 19

Advancing to step 5:
19 goes into 129 6 times with a remainder of 15.
The number 6 becomes the next digit in our result. 
Result so far: 2896.0
If we subtract 114 from 129, we get 15.
Grab the next digit (0) from the dividend, add it to 15, then carry on: 150 / 19

Step 6:
When dividing 150 by 19, we get 7 with a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 28967.0
The remainder is 17 after subtracting 133 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 7:
19 can be fit into 170 8 times, resulting in a remainder of 18.
The next digit of our result is 8. 
Result so far: 28967.8
Subtracting 152 from 170 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 8:
The number 19 fits into 180 9 times, leaving a remainder of 9.
Use 9 as the next digit of our solution. 
Result so far: 28967.89
Subtract 171 from 180 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 9:
19 can be fit into 90 4 times, resulting in a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 28967.894
The remainder is 14 after subtracting 76 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 10:
When dividing 140 by 19, we get 7 with a remainder of 7.
The number 7 becomes the next digit in our result. 
Result so far: 28967.8947
Subtract 133 from 140 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 11:
When dividing 70 by 19, we get 3 with a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 28967.89473
Subtract 57 from 70 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 12:
19 goes into 130 6 times with a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 28967.894736
Subtracting 114 from 130 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 13:
The number 19 fits into 160 8 times, leaving a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 28967.8947368
Deduct 152 from 160 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 14:
19 goes into 80 4 times with a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 28967.89473684
Subtract 76 from 80 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 28967.89473684 with a remaining 4e-09.